RFC 1483 Routing
RFC 1483 routing, as the name suggests, is also based on RFC 1483 as explained in the RFC 1483 bridged architecture. The only difference is that the CPE in this case is in 1483 routing mode and sends routed PDUs instead of bridged PDUs. The upper layer protocols, such as IP, are again encapsulated into LLC SNAP, just the way they became encapsulated in bridged mode.
Operational Description of RFC 1483 Routing
As Figure 4-16 shows, the CPE or the ATU-R is now configured in the RFC 1483 routing mode, and the Ethernet frame from the subscriber PC is not passed over to the aggregation device. This is the main difference in the stack compared to that of RFC 1483 bridging where the CPE or ATU-R was configured in bridged mode and ...
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